Evolution of Design: Marbles

I was playing with a new design for caging some cracked glass marbles the other day and came up with this:

I used that idea to create a necklace and a pair of earrings:

When working with the white marbles, I noticed that the marble was held in place without the addition of the last large ring.  So, with my one yellow marble, I left the last ring off and removed the corresponding ring on the other side, creating a more open effect:

As is often the case, one ideal leads to another, which leads to another, which lead to another..........